<template>
  <view v-if="goods_info.goods_name" class="goods-detail-co0ntainer">
    <!-- 轮播图区域 -->
    <swiper :indicator-dots="true" :autoplay="true" :interval="3000" :duration="1000" circular="true">
      <swiper-item v-for="(item, i) in goods_info.pics" :key='i'>
        <image :src="item.pics_big" @click="preview(i)"></image>
      </swiper-item>
      </swiper>
      <!-- 商品主体区域 -->
      <view class="goods-info-box">
        <!-- 价格 -->
        <view class="price">￥{{goods_info.goods_price}}</view>
        <!-- 商品主体 -->
        <view class="goods-info-body">
          <!-- 商品名称 -->
          <view class="goods-name">{{goods_info.goods_name}}</view>
          <!-- 收藏 -->
          <view class="favi">
            <uni-icons type="star" size="18" color="gray"></uni-icons>
                  <text>收藏</text>
          </view>
        </view>
        <!-- 运费 -->
         <view class="yf">快递：免运费</view>
      </view>
      <!-- 商品详情区域 -->
      <rich-text :nodes="goods_info.goods_introduce"></rich-text>
      <!-- 商品导航区域 -->
      <view class="goods-nav">
        <uni-goods-nav :fill="true"  :options="options" :buttonGroup="buttonGroup"  @click="onClick" @buttonClick="buttonClick" />
      </view>
  </view>
</template>

<script>
  import { mapState, mapMutations, mapGetters } from 'vuex'
  export default {
    computed: {
      ...mapState('m_cart', []),
      ...mapGetters('m_cart', ['total'])
    },
    watch:{
      // total (newVal) {
      //  const findResult = this.options.find(x => x.text === '购物车')
      //  if (findResult) {
      //    findResult.info = newVal
      //  }
      // }
      total: {
        handler (newVal) {
           const findResult = this.options.find(x => x.text === '购物车')
           if (findResult) {
             findResult.info = newVal
           }
        },
        // immediate 属性用来声明此侦听器，是否在页面初次加载完毕后立即调用
        immediate:true
      }
    },
    data() {
      return {
        // 商品详情参数
        goods_info: {},
        // 左侧导航配置
        options: [{
                    icon: 'shop',
                    text: '店铺',
                    infoBackgroundColor:'#007aff',
                    infoColor:"red"
                }, {
                    icon: 'cart',
                    text: '购物车',
                    info: 0
                }],
                // 右侧导航配置
                buttonGroup: [{
                  text: '加入购物车',
                  backgroundColor: '#ff0000',
                  color: '#fff'
                },
                {
                  text: '立即购买',
                  backgroundColor: '#ffa200',
                  color: '#fff'
                }
                ]
      };
    },
    onLoad(options) {
      // 获取商品 Id
        const goods_id = options.goods_id
        // 调用请求商品详情数据的方法
        this.getGoodsDetail(goods_id)
    },
    methods:{
      ...mapMutations('m_cart', ['addToCart']),
     async getGoodsDetail(goods_id) {
        const { data: res } = await uni.$http.get('/api/public/v1/goods/detail', {goods_id})
        if (res.meta.status !== 200) return uni.$showMsg()
        // 处理图片底部空白间隙的问题
       res.message.goods_introduce = res.message.goods_introduce.replace(/<img /g, '<img style="display: block;"').replace(/webp/g, 'jpg')
        this.goods_info = res.message
      },
      // 实现轮播图的预览效果
      preview(i) {
        uni.previewImage({
          current: i,
          urls: this.goods_info.pics.map(x => x.pics_big)
        })
      },
      onClick (e) {
        if (e.content.text === '购物车') {
          uni.switchTab({
            url:'/pages/cart/cart'
          })
        }
      },
      buttonClick(e) {
        if (e.content.text === '加入购物车') {
          // 商品信息对象
           const goods = {
                   goods_id: this.goods_info.goods_id,       // 商品的Id
                   goods_name: this.goods_info.goods_name,   // 商品的名称
                   goods_price: this.goods_info.goods_price, // 商品的价格
                   goods_count: 1,                           // 商品的数量
                   goods_small_logo: this.goods_info.goods_small_logo, // 商品的图片
                   goods_state: true                         // 商品的勾选状态
                }
          // 调用方法
          this.addToCart(goods)
        }
      }
    }
  }
</script>

<style lang="scss">
swiper {
  height: 750rpx;
  image{
    width: 100%;
    height: 100%;
  }
}
// 商品信息区域的样式
.goods-info-box {
  padding: 10px;
  padding-right: 0;

  .price {
    color: #c00000;
    font-size: 18px;
    margin: 10px 0;
  }

  .goods-info-body {
    display: flex;
    justify-content: space-between;

    .goods-name {
      font-size: 13px;
      padding-right: 10px;
    }
    // 收藏区域
    .favi {
      width: 120px;
      font-size: 12px;
      display: flex;
      flex-direction: column;
      justify-content: center;
      align-items: center;
      border-left: 1px solid #efefef;
      color: gray;
    }
  }

  // 运费
  .yf {
    margin: 10px 0;
    font-size: 12px;
    color: gray;
  }
}
.goods-detail-co0ntainer {
  padding-bottom: 50px;
  .goods-nav {
    position: fixed;
    bottom: 0;
    left: 0;
    width: 100%;
  }
}
</style>
